Fig 1. Effects of various bacteria and nematode treatments on the root architecture of peanut: (a) total root length; (b) root surface area; (c) root volume; and (d) the number of root tips.

The error bars represent the standard deviation. For each incubation time, the different letters indicate significant differences (P < 0.05). CK: control soil without bacteria or nematodes; B: soil inoculated with B. megaterium JX 15; N1: soil inoculated with the isolated Cephalobus sp.; N2: soil inoculated with the isolated Mesorhabditis sp.; BN1: soil inoculated with B. megaterium JX 15 and the Cephalobus sp.; and BN2: soil inoculated with B. megaterium JX 15 and the Mesorhabditis sp.